tonytr - It's really their only choice. Most people don't want to see a Cain/JDS rematch just yet, Cormier won't fight him, Mark Hunt's record makes it difficult to hand him the shot if he beats Struve, and I think they'd be hesitant to give one to Struve (if he beats Hunt) since he got KO'ed in the first round by two guys that are still "in the mix."
Actually I'd much prefer the Hunt-Struve winner getting the shot to Bigfoot. No one is going to forget how badly Bigfoot got ruined the first time.
And the Hunt-Struve winner would be a very legit contender. Whoever won that fight would be on a hell of a tear. You couldn't say they hadn't earned a title shot - Werdum is the only guy I'd rank higher in terms of contendership than the Struve-Hunt winner.
Hunt's overall record may not be good, but outside of McCorkle he's only lost to top guys. And he's clearly a very improved fighter since going to ATT, especially his TDD. He's also very exciting and his name does have some cachet among MMA fans. You can market Hunt pretty easily, he has a good highlight reel.
And Struve has lost to others, but he hasn't lost to Cain yet. I think if Struve beat Hunt you could sell Struve as a legit contender. Most would predict Cain to obliterate him, but that's no different than their expectations for Bigfoot anyway. Struve also has clearly improved a ton since him getting KOed by Browne, I'm been very impressed by Struve's progress.
Also I'm so tired of rematches...the past couple years have seen how many rematches??? The UFC has gone way overboard with the damn rematches.